Teeth whitening can be a highly effective, yet very simple way, of lightening the colour of teeth without removing any of the tooth surface. It cannot make a colour change, but lightens the existing colour. This may be achieved by a single or multi visit procedure. Your teeth will naturally darken with age. Many things can stain your teeth for example, Smoking, black tea, and coffee. The procedure is entirely safe for you, your teeth and your gums.